#include <stdio.h>
int main()
{   float x;
 scanf("%f",&x);
 printf("\n2.4*x-1.0/2=%f",2.4*x-1.0/2);
 printf("\nx%%2/5-x=%f",(float)((int)x%2/5-x));
 x=x*10;
 x=x/10;
 printf("\n(x=x*10,x/=10)=%f\n",x); 
 return 0;
}